JP2013140443A - Backup control program, backup control method, and backup control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make backup data of a control target device redundant by using a backup function of the control target device.SOLUTION: A backup control device 101 transmits a backup instruction 132 of backup target data stored in a storage unit 120 with a backup data transmission request 133 for the backup target data to a control target device 102. The control target device 102 performs backup of the backup target data by backup means by associating the backup target data with backup data identification information of the backup target data. The control target device 102 transmits backup data 150 of the backup target data to the backup control device 101. The backup control device 101 stores the backup data 150 in a storage unit 110 in association with identification information of the backup data 150.

Description

  The present invention relates to a backup control program, a backup control method, and a backup control apparatus.

  Conventionally, there is a technique for storing backup data of data stored in a backup target machine in another device in preparation for data abnormality such as data destruction or computer virus infection. If a data abnormality occurs, the data that has become abnormal is repaired using backup data stored in another device.

  As a related prior art, for example, there is a technique in which control data and check data are collated to determine which one is abnormal, and the abnormal data is restored.

JP-A-8-95868

  However, according to the prior art, when backup data stored in another device becomes abnormal, for example, it is difficult to perform repair work when data stored in a backup target machine becomes abnormal. There is a problem of becoming.

  In one aspect, an object of the present invention is to use a backup function of a control target device for redundancy of backup data.

  According to one aspect of the present invention, a backup target data backup instruction stored in the control target device is provided in a control target device having backup means for backing up the data in association with identification information of data replication data, and When the replication data transmission request and the replication data identification information are transmitted, and the replication data is received as a result of transmitting the backup instruction, the transmission request, and the replication data identification information. A backup control program, a backup control method, and a backup control apparatus for storing the duplicate data in a storage unit in association with identification information of the duplicate data are proposed.

  According to another aspect of the present invention, a backup instruction for backup target data stored in the control target device is provided in a control target device having backup means for backing up the data in association with identification information of data replication data. And a copy data transmission request of the data to be backed up, and as a result of transmitting the backup instruction and the transmission request, when receiving the copy data and the identification information of the copy data, A backup control program, a backup control method, and a backup control apparatus that store the duplicate data in a storage unit in association with identification information are proposed.

  According to one aspect of the present invention, there is an effect that the backup function of the device to be controlled can be used for redundancy of backup data.

FIG. 1 is an explanatory diagram of an example of the backup control method according to the first embodiment. FIG. 2 is an explanatory diagram of an example of the backup data restoration method according to the first embodiment. FIG. 3 is an explanatory diagram of a system configuration example of the backup system 300 according to the second embodiment. FIG. 4 is an explanatory diagram illustrating an example of a backup operation of the backup target machine M. FIG. 5 is a block diagram illustrating a hardware configuration example of the backup server 301. FIG. 6 is a block diagram illustrating a hardware configuration example of the backup target machine M. As illustrated in FIG. FIG. 7 is an explanatory diagram showing an example of the contents stored in the data association table 700. FIG. 8 is an explanatory diagram showing an example of the stored contents of the file information table 800. FIG. 9 is an explanatory diagram showing an example of the stored contents of the restoration point table 900. FIG. 10 is an explanatory diagram showing an example of the stored contents of the save information table 1000. FIG. 11 is a block diagram illustrating a functional configuration example of the backup server 301. FIG. 12 is a block diagram illustrating a functional configuration example of the backup target machine M. As illustrated in FIG. FIG. 13 is a flowchart illustrating an example of a backup processing procedure of the backup server 301. FIG. 14 is a flowchart illustrating an example of the verification processing procedure of the backup server 301. FIG. 15 is a flowchart illustrating an example of a backup processing procedure of the backup target machine M. FIG. 16 is a flowchart illustrating an example of the repair data transmission processing procedure of the backup target machine M.

  Exemplary embodiments of a backup control program, a backup control method, and a backup control apparatus according to the present invention will be explained below in detail with reference to the accompanying drawings.

(Embodiment 1)
(One example of backup control method)
FIG. 1 is an explanatory diagram of an example of the backup control method according to the first embodiment. In FIG. 1, a backup control apparatus 101 is a computer that controls backup of backup target data stored in the control target apparatus 102. The backup control apparatus 101 includes a storage unit 110 and has a function of backing up backup target data stored in the control target apparatus 102.

  The control target device 102 is a computer that includes a storage unit 120 and includes a backup unit that backs up data. When receiving the backup instruction for the backup target data stored in the storage unit 120 from the backup control apparatus 101, the control target apparatus 102 backs up the backup target data by the backup unit.

  The backup means backs up the data in association with the identification information of the backup data. The backup unit backs up data by using a snapshot function using a copy-on-write method, for example. The copy-on-write method is a method for creating and storing backup data of data before rewriting when data is rewritten.

  Data backup data is replicated data obtained by duplicating data. The identification information of the backup data may be, for example, an ID (identification) that uniquely identifies the backup data, or may be time point information that specifies a point in time when the data is backed up.

  Further, the control target apparatus 102 transmits the backup data of the backup target data to the backup control apparatus 101 in response to a backup data transmission request for the backup target data from the backup control apparatus 101. The transmitted backup data is stored in the storage unit 110 of the backup control apparatus 101.

  Here, the backup data stored in the storage unit 110 may be lost or damaged for some reason, resulting in data abnormality. In this case, when the data stored in the storage unit 120 becomes abnormal, the data cannot be restored using the backup data stored in the storage unit 110.

  For example, it is assumed that complete backup of data to be backed up is performed regularly. In this case, when the latest complete backup data becomes abnormal, it is possible to restore the data with the abnormal data only to data backed up at a time before the last backup.

  In addition, when incremental or differential backup is performed, if the latest incremental or differential backup data becomes abnormal, the data with the abnormal data is backed up to the time before the last backup. Can only be restored. Furthermore, if the complete backup data performed first becomes a data abnormality, the data in which the data abnormality has occurred cannot be restored.

  Further, assuming that the backup data is abnormal, it is conceivable that the backup control apparatus 101 side holds the backup data in a redundant manner. However, in this case, the processing time and storage capacity required for the backup processing of the backup control apparatus 101 are increased.

  Therefore, in the first embodiment, the backup function of the control target apparatus 102 is used to make backup data redundant on the backup server 301 side and the control target apparatus 102 side separately. As a result, it is possible to restore the backup data in which the data abnormality occurred on the backup server 301 side. Hereinafter, an example of a processing procedure of the backup control method according to the first embodiment will be described.

  (1) The backup control apparatus 101 generates an ID 131 that uniquely identifies backup data of backup target data stored in the storage unit 120 of the control target apparatus 102. This ID 131 uniquely identifies backup data 150 to be described later.

  (2) The backup control apparatus 101 transmits a backup data transmission request 133 of the backup target data to the control target apparatus 102 together with the backup instruction 132 of the backup target data stored in the storage unit 120. Here, the backup instruction 132 includes, for example, an ID 131 for identifying the backup data of the backup target data.

  (3) When the control target device 102 receives the backup instruction 132 and the transmission request 133, the backup target data is backed up in association with the backup data identification information of the backup target data by the backup unit. Here, the backup data identification information is, for example, the ID 131 included in the backup instruction 132.

  Specifically, for example, the control target device 102 stores the backup data 140 of the backup target data created by the backup unit in the storage unit 120 in association with the ID 131. More specifically, for example, when the backup target data is rewritten for the first time after the backup instruction 132 is received, the backup unit creates the backup data 140 by duplicating the data before rewriting.

  (4) The control target device 102 transmits the backup data 150 of the backup target data to the backup control device 101. Specifically, for example, when the backup instruction 132 is received, the control target apparatus 102 creates the backup data 150 by duplicating the backup target data and transmits the backup data 150 to the backup control apparatus 101.

  (5) When the backup control apparatus 101 receives the backup data 150, the backup control apparatus 101 stores the backup data 150 in the storage unit 110 in association with the identification information of the backup data 150. Here, the identification information of the backup data 150 is, for example, the ID 131 included in the backup instruction 132.

  Thus, according to this backup control method, the backup data 150 and 140 can be held in each of the backup control apparatus 101 and the control target apparatus 102 by using the backup means of the control target apparatus 102.

  Thereby, the backup data of the backup target data stored in the storage unit 120 of the control target device 102 can be made redundant. In addition, the processing time and storage capacity required for the backup processing of the backup control apparatus 101 can be reduced as compared with the case where backup data is stored redundantly on the backup control apparatus 101 side.

(One example of backup data restoration method)
Next, an example of the backup data restoration method according to the first embodiment will be described. FIG. 2 is an explanatory diagram of an example of the backup data restoration method according to the first embodiment. Hereinafter, a case where the backup data 150 stored in the storage unit 110 of the backup control apparatus 101 illustrated in FIG. 1 has a data abnormality will be described as an example.

  (6) The backup control apparatus 101 detects the backup data 150 in which the data stored in the storage unit 110 is abnormal. Here, the data abnormality is, for example, a state in which the backup target data cannot be restored because the backup data 150 is missing, damaged, or cannot be read for some reason.

  (7) When the backup control apparatus 101 detects a data abnormality in the backup data 150, the backup control apparatus 101 transmits the ID 131 stored in the storage unit 110 in association with the backup data 150 to the control target apparatus 102. The transmission of ID 131 represents a restoration data acquisition request for restoring the backup data 150.

  (8) When receiving the ID 131, the control target device 102 searches the storage unit 120 for backup data that is backed up in association with the ID 131. Here, the backup data 140 stored in the storage unit 120 in association with the ID 131 is searched.

  (9) The control target device 102 transmits the searched backup data 140 to the backup control device 101.

  (10) When the backup control apparatus 101 receives the backup data 140, the backup control apparatus 101 uses the backup data 140 to restore the backup data 150 in which the data is abnormal.

  As described above, according to the backup data restoration method, when the backup data 150 becomes abnormal, the backup data 150 is restored using the backup data 140 stored in the storage unit 120 of the control target apparatus 102. can do.

  Thereby, after that, for example, when the backup target data in the storage unit 120 becomes abnormal, it is possible to restore the backup target data using the restored backup data restored using the backup data 140. it can. In the above description, the ID 131 generated by the backup control apparatus 101 is used as the identification information of the backup data 150. However, the present invention is not limited to this.

  For example, as the identification information of the backup data 150, time point information indicating the reception time when the control target apparatus 102 receives the backup instruction 132 may be used. In this case, in the above (4), the control target device 102 transmits the backup data 150 together with the time point information to the backup control device 101. In (5) above, the backup control apparatus 101 stores the backup data 150 in the storage unit 110 in association with the time point information. As a result, the backup data 140 and the backup data 150 can be associated with each other using the time point information indicating the reception time of the backup instruction 132. In this case, generation of the ID 131 in the above (1) becomes unnecessary.

  For example, when the time is synchronized between the backup control apparatus 101 and the control target apparatus 102, the backup control apparatus 101 uses time point information indicating the transmission time of the backup instruction 132 as the identification information of the backup data 150. It may be. Further, the control target apparatus 102 may use time point information indicating the reception time of the backup instruction 132 as the identification information of the backup data 150. Here, it is assumed that the transmission time and the reception time of the backup instruction 132 are substantially the same time. As a result, the backup data 140 and the backup data 150 can be associated with each other using the time information indicating the transmission time of the backup instruction 132 and the time information indicating the reception time. In this case, generation of the ID 131 in the above (1) becomes unnecessary.

(Embodiment 2)
Next, a system configuration example of the backup system 300 according to the second embodiment will be described. Hereinafter, the backup control device 101 shown in FIGS. 1 and 2 is replaced with the backup server 301 included in the backup system 300 shown in FIG. 3, and the control target device 102 shown in FIGS. An example will be described in which the present invention is applied to each backup target machine M included in the backup system 300 shown. Note that description of portions similar to those described in the first embodiment is omitted.

  FIG. 3 is an explanatory diagram of a system configuration example of the backup system 300 according to the second embodiment. In FIG. 3, the backup system 300 includes a backup server 301 and a plurality of backup target machines M (for example, backup target machines M1 to M3).

  In the backup system 300, the backup server 301 and the backup target machine M are communicably connected via a wired or wireless network 310. The network 310 is, for example, a local area network (LAN), a wide area network (WAN), or the Internet.

  Here, the backup server 301 is a computer that includes the storage device 302 and backs up the backup target data stored in the storage device D (for example, the storage devices D1 to D3) of the backup target machine M. Specifically, for example, the backup server 301 obtains backup data from the backup target machine M by making a transmission request for backup data to the backup target machine M.

  The backup target data is, for example, information stored in a storage area used by an OS (Operating System) of the backup target machine M in the storage area of the storage device D. Specifically, for example, the backup target data includes information on how partitions are partitioned in the storage device D, OS, applications, and the like.

  Further, the backup server 301 has a function of controlling backup of backup target data stored in the storage device D of the backup target machine M. Specifically, for example, the backup server 301 instructs the backup target machine M to backup the backup target data by transmitting a backup instruction of the backup target data to the backup target machine M.

  Further, the backup server 301 may have a function of restoring the backup target data stored in the storage device D of the backup target machine M. Restoration refers to restoring backup target data in which data abnormality has occurred using backup data when the backup target data becomes abnormal.

  As the backup method of the backup server 301, for example, any one of a complete backup method, an incremental backup method, and a differential backup method may be adopted. The storage device 302 is realized by, for example, a memory 502 and an auxiliary storage device 503 shown in FIG.

  The backup target machine M is a computer having a storage device D and having a snapshot function using a copy-on-write method. Further, the backup target machine M has a function of creating backup data of backup target data stored in the storage device D and transmitting it to the backup server 301.

  The storage device D is provided with a storage area for backup. Note that the storage device D is realized by, for example, a memory 602 and an auxiliary storage device 604 shown in FIG. Further, the storage device D may be a storage device that can be accessed by the backup target machine M via a SAN (Storage Area Network).

  Here, agent A (for example, agents A1 to A3), which is software for communicating with the backup server 301, is installed in the backup target machine M.

  For example, when the agent A receives a backup data transmission request from the backup server 301, the agent A creates backup data of the backup target data stored in the storage device D. Then, for example, the agent A compresses the created backup data and transmits the compressed backup data to the backup server 301 in units of blocks.

  In this case, the backup server 301 may create a backup image and store it in the storage device 302 by merging the received backup data in units of blocks, for example. A backup image is a single file obtained by compressing backup data.

  For example, when the agent A receives a backup instruction from the backup server 301, the agent A creates a restoration point. The restoration point is for restoring the state of the backup target machine M to the state at the time when the restoration point was created. Here, an operation example of the backup target machine M that performs data backup using the restoration point will be described.

  FIG. 4 is an explanatory diagram showing a backup operation example by the snapshot function using the copy-on-write method of the backup target machine M. In FIG. 4, the transition of the stored content is shown along the time axis by taking the file F as an example of the backup target data. The file F is information stored in the storage area 401 of the storage device D of the backup target machine M.

  First, when the restoration point 1 is created at time t1, the snapshot function using the copy-on-write method holds the state of the file F at the time t1 when the restoration point 1 was created. Agent A may perform this function. Here, it is assumed that the storage content a of the file F is changed to the storage content b and is overwritten and saved at time t2.

  In this case, at time t2, the backup data of the file F (storage content a) at time t1 is saved in the backup storage area 402 of the storage device D by the snapshot function using the copy-on-write method. Agent A may perform this function. As a result, the file F (stored content a) at the time t1 when the restoration point 1 is created can be restored thereafter.

  Here, it is assumed that the content of the file F changed between a plurality of restoration points cannot be restored. In the example of FIG. 4, the content of the file F is changed twice at times t2 and t3 between the time t1 when the restoration point 1 is created and the time t4 when the restoration point 2 is created. In this case, the storage contents b and c of the file F at times t2 and t3 cannot be restored from the restoration points 1 and 2.

(Hardware configuration example of backup server 301)
Next, the hardware configuration of the backup server 301 will be described. FIG. 5 is a block diagram illustrating a hardware configuration example of the backup server 301. In FIG. 5, the backup server 301 includes a CPU (Central Processing Unit) 501, a memory 502, an auxiliary storage device 503, an I / F (Interface) 504, a display 505, a keyboard 506, a mouse 507, and the like. doing. Each component is connected by a bus 500.

  Here, the CPU 501 governs overall control of the backup server 301. The memory 502 includes a ROM (Read-Only Memory), a RAM (Random Access Memory), a flash ROM, and the like. The ROM and the flash ROM store various programs such as applications, for example. The RAM is used as a work area for the CPU 501.

  The auxiliary storage device 503 is a storage device that stores data, and reads / writes data under the control of the CPU 501. The auxiliary storage device 503 is realized by, for example, a magnetic disk, an optical disk, a magnetic tape, a flash memory, or the like.

  The I / F 504 is connected to the network 310 through a communication line, and is connected to other devices via the network 310. The I / F 504 controls an internal interface with the network 310 and controls input / output of data from an external device. For example, a modem or a LAN adapter may be employed as the I / F 504.

  A display 505 displays data such as a document, an image, and function information as well as a cursor, an icon, or a tool box. As the display 505, for example, a CRT, a TFT liquid crystal display, a plasma display, or the like can be adopted.

  The keyboard 506 includes keys for inputting characters, numbers, various instructions, and the like, and inputs data. The mouse 507 moves the cursor, selects a range, moves the window, changes the size, and the like. Note that the backup server 301 may include, for example, a scanner, a printer, and the like in addition to the components described above.

(Hardware configuration example of backup target machine M)
Next, the hardware configuration of the backup target machine M will be described. FIG. 6 is a block diagram illustrating a hardware configuration example of the backup target machine M. As illustrated in FIG. In FIG. 6, the backup target machine M includes a CPU 601, a memory 602, an I / F 603, an auxiliary storage device 604, and the like. Each component is connected by a bus 600.

  Here, the CPU 601 controls the entire backup target machine M. The memory 602 includes a ROM, a RAM, a flash ROM, and the like. The ROM and the flash ROM store various programs such as applications, for example. The RAM is used as a work area for the CPU 601.

  The I / F 603 is connected to the network 310 via a communication line, and is connected to other devices via the network 310. The I / F 603 controls an internal interface with the network 310 and controls input / output of data from an external device. For example, a modem or a LAN adapter may be employed as the I / F 603.

  The auxiliary storage device 604 is a storage device that stores data, and reads / writes data under the control of the CPU 601. The auxiliary storage device 604 is realized by, for example, a magnetic disk, an optical disk, a magnetic tape, a flash memory, or the like. Note that the backup target machine M may include, for example, a display, a keyboard, a mouse, and the like in addition to the above-described components.

(Storage contents of the data relation table 700)
Next, the storage contents of the data relation table 700 used by the backup server 301 will be described. The data association table 700 is realized by, for example, the memory 502 or the auxiliary storage device 503 of the backup server 301 illustrated in FIG.

  FIG. 7 is an explanatory diagram showing an example of the contents stored in the data association table 700. In FIG. 7, the data association table 700 has fields of machine ID, complete backup data ID, and incremental backup data ID. By setting information in each field, related information (for example, related information 700-1, 700-2) is stored as a record.

  The machine ID is an identifier of the backup target machine M. The case where the ID 131 for uniquely identifying the backup data of the backup target data shown in FIGS. 1 and 2 is applied as the data ID of the backup data will be described as an example. The complete backup data ID is a data ID of backup data that is complete backup data. The incremental backup data ID is a data ID of backup data that is incremental backup data. In the figure, the number after “#” indicates the number of incremental backups. For example, “# 2” means the second incremental backup.

  As an example, when the related information 700-2 is taken as an example, each data ID of the first to third incremental backup data performed after the full backup in association with the complete backup data ID “123” of the backup target machine M1. “124, 125, 126” are shown.

(Storage contents of file information table 800)
Next, the storage contents of the file information table 800 used by the backup server 301 will be described. The file information table 800 is created for each backup data of the backup target machine M, for example. The file information table 800 is realized by, for example, the memory 502 or the auxiliary storage device 503 of the backup server 301.

  FIG. 8 is an explanatory diagram showing an example of the stored contents of the file information table 800. In FIG. 8, a file information table 800 has fields for data ID, file name, path name, date / time, size, and hash value. By setting information in each field, file information for each file (for example, file information 800-1 and 800-2) is stored as a record. These fields are examples, and other information may be used to identify the file.

  Here, the machine ID is an identifier of the backup target machine M. The case where the ID 131 for uniquely identifying the backup data of the backup target data shown in FIGS. 1 and 2 is applied as the data ID of the backup data will be described as an example. The file name is the name of a file included in the backup data. The path name is a name of a path indicating a storage location where the file is stored on the backup target machine M. The date / time is the last update date / time of the file. The size is the file data size (unit: bytes). The hash value is a fixed-length pseudorandom number obtained by giving the stored contents of the file to the hash function.

  As an example, taking the file information 800-2 as an example, the file name “bbb.doc”, the path name “D: \ test \ pro \”, and the date and time “2011” of the file included in the backup data 125 of the backup target machine M1. / 07/10 09:37 ”, size“ 126, 889 ”, and hash value“... ”(Value given by the hash function).

(Storage contents of restoration point table 900)
Next, the storage contents of the restoration point table 900 used by the backup target machine M will be described. The restoration point table 900 is realized, for example, by the memory 602 and the auxiliary storage device 604 of the backup target machine M illustrated in FIG. Here, the restoration point table 900 used by the backup target machine M1 will be described as an example.

  FIG. 9 is an explanatory diagram showing an example of the stored contents of the restoration point table 900. In FIG. 9, a restoration point table 900 has fields for restoration point ID, data ID, and date / time. By setting information in each field, restoration point information (for example, restoration point information 900-1 and 900-2) for each restoration point is stored as a record.

  Here, the restoration point ID is an identifier of the restoration point. The case where the ID 131 for uniquely identifying the backup data of the backup target data shown in FIGS. 1 and 2 is applied as the data ID of the backup data will be described as an example. The date and time is the date and time when the restoration point was created. As an example, taking the restoration point information 900-2 as an example, the data ID “125” of the backup data related to the restoration point with the restoration point ID “P2” and the date and time “2011/07/23 18 when the restoration point was created. : 01 ".

(Storage contents of save information table 1000)
Next, the storage contents of the save information table 1000 used by the backup target machine M will be described. The save information table 1000 is realized by, for example, the memory 602 and the auxiliary storage device 604 of the backup target machine M illustrated in FIG. Here, the save information table 1000 used by the backup target machine M1 will be described as an example.

  FIG. 10 is an explanatory diagram showing an example of the stored contents of the save information table 1000. In FIG. 10, the save information table 1000 has fields for a restore point ID, a file name, a path name, and a save destination file name. By setting information in each field, save information (for example, save information 1000-1 and 1000-2) for each restoration point is stored as a record.

  Here, the restoration point ID is an identifier of the restoration point. The file name is the name of the save target file. The save target file is backup target data that has been updated since the point when the restore point was created. The path name is a path name indicating a storage location on the backup target machine M in which the save target file is stored. The save destination file name is the file name of the save target file stored in the backup storage area 402 (see FIG. 4) in the storage device D.

  As an example, taking the save information 1000-2 as an example, the save information 1000-2-1 created as a result of updating the file with the file name “bbb.doc” after the point when the restoration point P2 is created is included. It is. In the save information 1000-2-1, the path name “D: \ test \ pro \” of the file name “bbb.doc” and the save destination file name “¥ Snapshot \ P1_523” are shown.

(Functional configuration example of the backup server 301)
Next, a functional configuration example of the backup server 301 will be described. FIG. 11 is a block diagram illustrating a functional configuration example of the backup server 301. In FIG. 11, the backup server 301 includes a reception unit 1101, a generation unit 1102, a transmission unit 1103, a reception unit 1104, a creation unit 1105, an association unit 1106, a detection unit 1107, and a restoration unit 1108. It is the composition which includes. The receiving unit 1101 to the restoration unit 1108 are functions as control units. Specifically, for example, by causing the CPU 501 to execute a backup control program stored in the memory 502, the auxiliary storage device 503, or the like illustrated in FIG. Alternatively, the function is realized by the I / F 504. The processing result of each functional unit is stored in the memory 502, the auxiliary storage device 503, and the like, for example.

  The accepting unit 1101 has a function of accepting a backup request for backup target data stored in the storage device D of the backup target machine M. The backup request includes, for example, information indicating the machine ID of the backup target machine M and the backup method. In the following description, a case where an incremental backup method is used as a backup method will be described as an example.

  Specifically, for example, the reception unit 1101 receives a backup request for backup target data by a user operation input using the keyboard 506, the mouse 507, or the like illustrated in FIG. The accepting unit 1101 may accept a backup request for backup target data from an external computer via the I / F 504.

  The generation unit 1102 has a function of generating a data ID that uniquely identifies the backup data of the backup target data.

  The transmission unit 1103 transmits a backup request for backup data (hereinafter referred to as “transmission request R2”) to the backup target machine M together with a backup instruction for backup target data (hereinafter referred to as “backup instruction R1”). . Here, the backup instruction R1 includes, for example, the generated data ID, information for specifying the backup target data, information for specifying the backup method, and the like.

  The transmission request R2 includes information for specifying backup target data, information for specifying a backup method, and the like. Note that the backup target machine M that is the transmission destination of the backup instruction R1 and the transmission request R2 can be identified from the accepted backup request, for example.

  The receiving unit 1104 has a function of receiving backup data of backup target data from the backup target machine M as a result of the transmission of the backup instruction R1 and the transmission request R2. Specifically, for example, the receiving unit 1104 receives the compressed backup data from the backup target machine M in units of blocks.

  The creation unit 1105 has a function of creating a backup image of the backup target data based on the received backup data of the backup target data. Specifically, for example, the creation unit 1105 creates a single file by merging the received backup data in units of blocks, thereby enabling management by a data ID as a backup image of backup target data. Unless otherwise specified, the backup data described later will be described including the meaning of the backup image.

  Also, the creation unit 1105 creates file information for each file of backup target data based on the backup data. Here, the file information is information including the file name, path name, date and time, size, hash value, and the like of the file as shown in FIG.

  The associating unit 1106 has a function of associating the data ID generated by the generating unit 1102 with the backup data. Specifically, for example, the associating unit 1106 stores the created file unit file information in the file information table 800 in association with the machine ID of the backup target machine M and the data ID of the backup data.

  In addition, the associating unit 1106 has a function of associating the data ID of the backup data with the data ID of other backup data related to the backup data. For example, when the backup data is a full backup, the incremental backup data is not created, so that the backup data is not associated with other backup data.

  On the other hand, when the created backup data is an incremental backup, the created full backup data is associated with other incremental backup data. Specifically, for example, the associating unit 1106 stores the data ID of the incremental backup in the data association table 700 in association with the machine ID of the backup target machine M, the data ID of the full backup, and the data ID of another incremental backup. .

  Next, the processing content of each functional unit for repairing data in which abnormal data is included in backup data will be described.

  The detection unit 1107 has a function of detecting data in which data abnormality has occurred from backup data. Specifically, for example, the detection unit 1107 may detect data that is missing, damaged, or unreadable from backup data in units of files.

  Here, an example of specific processing contents of the detection unit 1107 will be described by taking as an example a case where the backup data of the backup data ID “125” of the backup target machine M1 detects data in which data is abnormal. In the following description, for example, backup data with the backup data ID “125” is represented as “backup data 125”.

  Specifically, for example, first, the detection unit 1107 selects file information from the file information table 800 illustrated in FIG. Next, the detection unit 1107 searches the backup data 125 for a file with the file name of the selected file information. Here, when the file is not searched, the detection unit 1107 detects the file having the file name of the selected file information as data having a data abnormality.

  On the other hand, when a file is searched, the detection unit 1107 compares the date / time / size / hash value of the selected file information with the date / time / size / hash value of the searched file. Here, when these values do not match, the detection unit 1107 detects the file having the file name of the selected file information as data having a data abnormality. On the other hand, if these values match, the detection unit 1107 determines that the file with the file name of the selected file information is normal. The detection of data that is abnormal in data is an example, and other methods and values may be used.

  For example, the detection unit 1107 repeats the above-described series of processing until there is no unselected file information not selected from the backup data 125. As a result, it is possible to detect, in file units, data having a data abnormality from the backup data 125.

  In addition, when detecting the data in which the data is abnormal from the backup data 125, the detection unit 1107 may identify other backup data related to the backup data 125. Specifically, for example, the detection unit 1107 specifies other related backup data with reference to the data association table 700 illustrated in FIG.

  As an example, when the backup data 125 in which data abnormal data is detected is detected, the detection unit 1107 refers to the data relation table 700 and sets other backup data 123, 124, 126 related to the backup data 125. Identify.

  When the data that has become abnormal is detected, the transmission unit 1103 transmits a recovery data acquisition request (hereinafter referred to as “acquisition request R3”) for repairing the data to the backup target machine M. Here, the acquisition request R3 includes, for example, file information of data in which the data is abnormal. Specifically, for example, the acquisition request R3 includes the data ID of the backup data, the file name, the path name, the date and time, the size, and the hash value of the file in which the data is abnormal.

  Further, the acquisition request R3 may include, for example, a data ID (hereinafter referred to as “related data ID”) of other backup data related to the backup data 125 in which data in which data abnormality has been detected is detected. . Note that the backup target machine M that is the transmission destination of the acquisition request R3 can be specified from, for example, file information of data that has a data error.

  The receiving unit 1104 has a function of receiving repair data for repairing data that has become abnormal as a result of the transmission of the acquisition request R3. The repair data is, for example, data specified from the acquisition request R3 among the data backed up in the storage area 402 of the storage device D of the backup target machine M.

  Specifically, for example, the repair data includes the file name, path name, date / time, size, and hash value included in the acquisition request R3 among the data backed up in association with the data ID of the backup data included in the acquisition request R3. It is data specified from

  When the repair data is received, the repair unit 1108 has a function of repairing data in which data is abnormal. Specifically, for example, the repair unit 1108 repairs the data in which the data is abnormal by overwriting the repair data in the storage area of the storage device 302 in which the data in which the data is abnormal is stored.

(Functional configuration example of backup target machine M)
Next, a functional configuration example of the backup target machine M will be described. FIG. 12 is a block diagram illustrating a functional configuration example of the backup target machine M. As illustrated in FIG. In FIG. 12, the backup target machine M includes a receiving unit 1201, a duplicating unit 1202, a creating unit 1203, a transmitting unit 1204, and a searching unit 1205. The receiving unit 1201 to the searching unit 1205 are functions as control units. Specifically, for example, by causing the CPU 601 to execute an agent program stored in the memory 602, the auxiliary storage device 604, or the like illustrated in FIG. Alternatively, the function is realized by the I / F 603. The processing result of each functional unit is stored in, for example, the memory 602, the auxiliary storage device 604, or the like.

  The receiving unit 1201 has a function of receiving a backup instruction R1 and a transmission request R2 from the backup server 301. As described above, the backup instruction R1 is a backup instruction for backup target data. The transmission request R2 is a transmission request for backup data of backup target data.

  When the backup instruction R1 is received, the duplication unit 1202 has a function of backing up the backup target data in association with the data ID of the backup data included in the backup instruction R1. Specifically, for example, the duplication unit 1202 creates a restoration point by a snapshot function. At this time, the duplication unit 1202 generates a restoration point ID that uniquely identifies the created restoration point.

  Then, the duplication unit 1202 associates the generated restoration point ID, the data ID of the backup data included in the backup instruction R1, and the date and time when the restoration point was created, and registers them in the restoration point table 900 shown in FIG. . As a result, new restoration point information is stored in the restoration point table 900 as a record.

  Further, when the backup target data is updated after the time when the restoration point is created, the duplication unit 1202 stores the duplication data obtained by duplicating the data before the update in the storage area 402 of the storage device D. Specifically, for example, the duplication unit 1202 stores the file before the update as a save target file and the copy of the save target file in the storage area 402 of the storage device D.

  Then, the duplication unit 1202 associates the restoration point ID of the restoration point, the file name, the path name, and the save destination file name of the save target file, and registers them in the save information table 1000 illustrated in FIG. As a result, new save information is stored in the save information table 1000 as a record.

  The creation unit 1203 has a function of creating backup data of backup target data when the transmission request R2 is received. Specifically, for example, the creation unit 1203 creates backup data in units of blocks by extracting backup target data from the storage device D and compressing it.

  The transmission unit 1204 has a function of transmitting backup data of the created backup target data to the backup server 301. Specifically, for example, the transmission unit 1204 sequentially transmits the created block unit backup data to the backup server 301.

  Next, processing contents of each functional unit for retrieving repair data for repairing data in which data has become abnormal will be described.

  The receiving unit 1201 has a function of receiving the acquisition request R3 from the backup server 301. As described above, the acquisition request R3 is a recovery data acquisition request for repairing data in which data is abnormal.

  The search unit 1205 has a function of searching the storage device D for repair data identified from the acquisition request R3 when the acquisition request R3 is received. Specifically, for example, the search unit 1205 searches the storage device D for data backed up in association with the data ID included in the acquisition request R3 among the data backed up by the duplication unit 1202.

  The transmission unit 1204 has a function of transmitting the retrieved repair data to the backup server 301. When the repair data is not searched, the search unit 1205 may transmit an acquisition response indicating that the repair data has not been searched to the backup server 301.

  Here, an example of specific processing contents of the search unit 1205 will be described. The search unit 1205 may execute at least one of the first to fourth search processes described below in any order.

  Here, the acquisition request R3 includes the data ID “125” of the backup data, the related data IDs “123, 124, 126”, the file name “bbb.doc”, the path name “D: \ test \ pro \”, the date and time “ Assume a case where 2011/07/10 09:37 ”, size“ 126, 889 ”, and hash value“... ”(Value given by the hash function) are included.

  However, since the capacity of the storage area 402 in the storage device D is limited, it is not possible to create unlimited restore points. Therefore, for example, when the storage capacity of the storage area 402 exceeds a specified value, the backup target machine M is deleted from the old restoration point.

  When the restoration point is deleted, for example, the restoration point information corresponding to the restoration point is deleted from the restoration point table 900. Similarly, when a restore point is deleted, for example, save information corresponding to the restore point is deleted from the save information table 1000.

First Search Process First, the search unit 1205 searches the storage area 401 of the storage device D for a file with the file name “bbb.doc” and the path name “D: \ test \ pro \”. Here, when the file is searched, the search unit 1205, for example, sets the size and hash value of the searched file to the size “126, 889” and the hash value “...” (Value given by the hash function). ) And whether or not each match.

  If the size and the hash value match, the search unit 1205 sets the searched file as repair data. As a result, using the file name and path name included in the acquisition request R3 as a clue, the repair for repairing the file with the file name “bbb.doc” in which the data is abnormal is stored in the storage area 401 of the storage device D. Data can be searched.

Second Search Process First, the search unit 1205 refers to the restore point table 900 and identifies the restore point ID corresponding to the data ID “125” of the backup data included in the acquisition request R3. In the example of FIG. 9, the restoration point ID “P2” corresponding to the data ID “125” is specified.

  Next, the search unit 1205 sets “P2” in the restoration point ID field, “bbb.doc” in the file name field, and “D” in the path name from the save information table 1000. Search for the evacuation information in which ": \ test \ pro \" is set. In the example of FIG. 10, search information 1000-2-1 is searched.

  Then, the search unit 1205 searches the storage area 402 of the storage device D for a file having the save destination file name of the searched save information 1000-2-1. As a result, using the data ID included in the acquisition request R3 as a clue, the repair data for repairing the file with the file name “bbb.doc” in which the data is abnormal is retrieved from the storage area 402 of the storage device D. can do.

Third Search Process The search unit 1205 refers to the restore point table 900 and identifies a restore point ID corresponding to the related data ID included in the acquisition request R3. Here, when the restoration point ID is specified, the search unit 1205 sets the restoration point ID in the restoration point ID field from the save information 1000 and sets “bbb.doc” in the file name field. In addition, search is made for save information in which “D: ¥ test ¥ pro ¥” is set in the path name.

  Then, the search unit 1205 searches the storage area 402 of the storage device D for a file having a save destination file name of the searched save information. Here, when the file is searched, the search unit 1205, for example, sets the size and hash value of the searched file to the size “126, 889” and the hash value “...” (Value given by the hash function). ) And whether or not each match.

  If the size and the hash value match, the search unit 1205 sets the searched file as repair data. Thereby, using the related data ID included in the acquisition request R3 as a clue, the repair data for repairing the file with the file name “bbb.doc” in which the data is abnormal is stored in the storage area 402 of the storage device D. You can search.

Fourth search process In the fourth search process, it is assumed that even if an old restore point is deleted, the restore point information corresponding to the restore point is not deleted from the restore point table 900.

  The search unit 1205 refers to the restoration point table 900, and the restoration point ID of the restoration point created immediately before or after the date and time when the restoration point of the restoration point ID corresponding to the data ID included in the acquisition request R3 is created. Is identified.

  Here, when the restoration point ID is specified, the search unit 1205 sets the restoration point ID in the restoration point ID field from the save information 1000 and sets “bbb.doc” in the file name field. In addition, search is made for save information in which “D: ¥ test ¥ pro ¥” is set in the path name.

  Then, the search unit 1205 searches the storage area 402 of the storage device D for a file having a save destination file name of the searched save information. Here, when the file is searched, the search unit 1205, for example, sets the size and hash value of the searched file to the size “126, 889” and the hash value “...” (Value given by the hash function). ) And whether or not each match.

  If the size and the hash value match, the search unit 1205 sets the searched file as repair data. As a result, the restoration data can be retrieved from the storage area 402 of the storage device D using the restoration point ID of the restoration point created most recently of the restoration point corresponding to the data ID included in the acquisition request R3. it can. Similarly, the related data ID may be a clue to the restoration point ID of the restoration point created immediately near the corresponding restoration point.

  In the above description, the restoration point created by the duplication unit 1202 is the search target, but the present invention is not limited to this. For example, when there is a restore point created by the user or OS of the backup target machine M, the search unit 1205 may set the restore point created by the user or OS as the search target.

(Various processing procedures of the backup server 301)
Next, various processing procedures of the backup server 301 will be described. Here, first, the backup processing procedure of the backup server 301 will be described.

  FIG. 13 is a flowchart illustrating an example of a backup processing procedure of the backup server 301. In the flowchart of FIG. 13, first, the backup server 301 determines whether or not a backup request for backup target data stored in the storage device D of the backup target machine M has been received (step S1301).

  Here, the backup server 301 waits to receive a backup request (step S1301: No). When the backup server 301 receives a backup request (step S1301: Yes), the backup server 301 generates a data ID that uniquely identifies the backup data of the backup target data (step S1302).

  Next, the backup server 301 transmits a backup data transmission request R2 of the backup target data to the backup target machine M together with the backup instruction R1 of the backup target data (step S1303). Then, the backup server 301 determines whether or not the backup data of the backup target data has been received from the backup target machine M (step S1304).

  Here, the backup server 301 waits for reception of backup data (step S1304: No). When the backup server 301 receives the backup data (step S1304: Yes), the backup server 301 stores the backup data to be backed up in the storage device D based on the received backup data (step S1305). At this time, the received backup data in units of blocks may be merged to create a file as a backup image.

  Next, the backup server 301 associates the data ID of the stored backup data with the data ID of other backup data related to the backup data and registers it in the data association table 700 (step S1306). Then, the backup server 301 creates file information for each file of the backup target data from the stored backup data (step S1307).

  Finally, the backup server 301 registers the created file unit file information in the file information table 800 in association with the machine ID of the backup target machine M and the data ID of the backup data (step S1308). Terminate the process.

  As a result, the backup target data stored in the storage device D of the backup target machine M can be held in the storage device 302 and a backup instruction R1 for the backup target data can be given to the backup target machine M.

  Next, the verification processing procedure of the backup server 301 will be described. The verification process is a process for verifying backup data of a certain data ID. This verification process is executed, for example, periodically or before execution of the backup process or before execution of the restore process, or at any timing of the user.

  FIG. 14 is a flowchart illustrating an example of the verification processing procedure of the backup server 301. In the flowchart of FIG. 14, first, the backup server 301 refers to the file information table 800 and detects data that is abnormal in data from the backup data (step S1401).

  Next, the backup server 301 determines whether or not data having a data abnormality has been detected (step S1402). Here, when the data in which the data is abnormal is not detected (step S1402: No), the backup server 301 proceeds to step S1413.

  On the other hand, when data having an abnormal data is detected (step S1402: Yes), the backup server 301 refers to the data association table 700 and identifies the data ID of other backup data related to the backup data. (Step S1403).

  Next, the backup server 301 selects the file information of the data in which the data is abnormal from the file information table 800 (step S1404). Based on the selected file information, the backup server 301 generates a repair data acquisition request R3 for repairing data in which data has become abnormal (step S1405).

  Next, the backup server 301 transmits an acquisition request R3 for the generated repair data to the backup target machine M (step S1406). Then, the backup server 301 determines whether or not the repair data for repairing the data in which the data is abnormal has been received from the backup target machine M (step S1407).

  Here, when the repair data is received (step S1407: Yes), the backup server 301 repairs the data having the data abnormality based on the received repair data (step S1408). On the other hand, when the repair data is not received (step S1407: No), the backup server 301 holds the file information of the data in which the data is abnormal in the memory 502 (step S1409).

  Next, the backup server 301 determines whether there is unselected file information of data that has not been selected from the file information table 800 and has an abnormal data (step S1410). If there is unselected file information (step S1410: YES), the backup server 301 returns to step S1404.

  On the other hand, when there is no unselected file information (step S1410: No), the backup server 301 determines whether or not the file information of the data with the data abnormality is held in the memory 502 (step S1411).

  Here, when the file information of the data in which the data is abnormal is held (step S1411: Yes), the backup server 301 outputs a verification result indicating the verification failure of the backup data (step S1412). A series of processes according to the flowchart ends.

  The output format of the verification result of the backup server 301 includes, for example, display on the display 505, print output to a printer (not shown), and transmission to an external computer via the I / F 504. Further, it may be stored in the memory 502, the auxiliary storage device 503, or the like.

  On the other hand, in step S1411, when the file information of the data in which the data is abnormal is not held (step S1411: No), the backup server 301 outputs a verification result indicating that the backup data is successfully verified (step S1413). ), A series of processes according to this flowchart is terminated.

  Thereby, the backup data to be verified can be verified. In addition, when the backup data includes data in which data is abnormal, it is possible to acquire repair data from the backup target machine M and repair the data in which data is abnormal.

  Note that the verification result indicating the verification failure of the backup data may include, for example, file information of data in which data abnormality has occurred. As a result, for example, the user of the backup server 301 can grasp the data that is abnormal in the data included in the backup data in units of files.

(Various processing procedures for backup target machine M)
Next, various processing procedures of the backup target machine M will be described. Here, first, the backup processing procedure of the backup target machine M will be described.

  FIG. 15 is a flowchart illustrating an example of a backup processing procedure of the backup target machine M. In the flowchart of FIG. 15, first, the backup target machine M determines whether or not the backup instruction R1 and the transmission request R2 are received from the backup server 301 (step S1501).

  Here, the backup target machine M waits to receive the backup instruction R1 and the transmission request R2 (step S1501: No). When the backup target machine M receives the backup instruction R1 and the transmission request R2 (step S1501: Yes), it creates a restoration point (step S1502).

  Next, the backup target machine M generates a restoration point ID that uniquely identifies the created restoration point (step S1503). Then, the backup target machine M registers the generated restoration point ID in association with the data ID of the backup data included in the backup instruction R1 and the date and time when the restoration point was created (step S1504).

  Next, the backup target machine M creates backup data of the backup target data (step S1505). Then, the backup target machine M transmits the created backup data to the backup server 301 (step S1506), and ends a series of processing according to this flowchart.

  Thereby, the backup data of the backup target data stored in the storage device D of the backup target machine M can be transmitted to the backup server 301 and the backup target data can be backed up.

  Next, the repair data transmission processing procedure of the backup target machine M will be described.

  FIG. 16 is a flowchart illustrating an example of the repair data transmission processing procedure of the backup target machine M. In the flowchart of FIG. 16, first, the backup target machine M determines whether or not a repair data acquisition request R3 for repairing data in which data has become abnormal has been received from the backup server 301 (step S1601).

  Here, the backup target machine M waits to receive the acquisition request R3 (step S1601: No). When the backup target machine M receives the acquisition request R3 (step S1601: Yes), the backup target machine M searches the operation system for repair data specified from the acquisition request R3 (step S1602). The operation system is a storage area used by the OS of the backup target machine M, for example, the storage area 401 of the storage device D.

  Next, the backup target machine M determines whether or not repair data has been retrieved (step S1603). Here, when the repair data is searched (step S1603: Yes), the backup target machine M proceeds to step S1608. On the other hand, when the repair data is not searched (step S1603: No), the backup target machine M refers to the restore point table 900 and identifies the restore point ID corresponding to the data ID included in the acquisition request R3 ( Step S1604).

  Then, the backup target machine M determines whether or not the restoration point ID is specified (step S1605). Here, when the restoration point ID is specified (step S1605: Yes), the backup target machine M searches for the corresponding save information from the save information table 1000 (step S1606).

  Next, the backup target machine M refers to the retrieved save information and reads the repair data from the storage area 402 of the storage device D (step S1607). Then, the backup target machine M transmits the read repair data to the backup server 301 (step S1608), and ends the series of processing according to this flowchart.

  If the restoration point ID is not specified in step S1605 (step S1605: No), the backup target machine M refers to the restoration point table 900, and restores corresponding to the related data ID included in the acquisition request R3. A point ID is specified (step S1609). Then, the backup target machine M determines whether or not the restoration point ID is specified (step S1610).

  Here, when the restoration point ID is not specified (step S1610: No), the backup target machine M ends the series of processes according to this flowchart. On the other hand, when the restoration point ID is specified (step S1610: Yes), the backup target machine M searches for the corresponding save information from the save information table 1000 (step S1611). Then, the backup target machine M determines whether or not the save information is retrieved (step S1612).

  Here, when the save information is searched (step S1612: Yes), the backup target machine M proceeds to step S1607. On the other hand, when the save information has not been searched (step S1612: No), the backup target machine M ends the series of processes according to this flowchart.

  As a result, it is possible to search the storage device D for repair data for repairing data that has become abnormal in data included in the backup data, and transmit the retrieved repair data to the backup server 301.

  As described above, the backup server 301 according to the second embodiment can transmit the backup data transmission request R2 for the backup target data to the backup target machine M together with the backup instruction R1 for the backup target data. Then, according to the backup server 301, when backup data is received as a result of transmitting the backup instruction R1 and the transmission request R2, the backup data can be stored in the storage device 302 in association with the data ID of the backup data.

  Further, according to the backup target machine M according to the second embodiment, when the backup instruction R1 and the transmission request R2 are received, the backup target data is backed up in association with the data ID of the backup data, and the backup data is backed up. It can be transmitted to the server 301. Thereby, the backup target data stored in the storage device D of the backup target machine M can be held and made redundant on both the backup server 301 side and the backup target machine M side.

  Further, according to the backup target machine M, it is possible to suppress an increase in storage capacity for backup of the backup target data by performing backup of the backup target data by using the snapshot function based on the copy-on-write method. it can.

  Further, according to the backup server 301, when data in which data abnormality has occurred is detected from backup data to be verified, a recovery data acquisition request R3 for repairing the data is transmitted to the backup target machine M. be able to. Further, according to the backup target machine M, the repair data identified from the acquisition request R3 can be searched from the storage device D and transmitted to the backup server 301.

  For example, according to the backup target machine M, the repair data can be searched from the storage area 401 of the storage device D using the file name, path name, date / time, size, and hash value included in the acquisition request R3 as clues. it can. As a result, it is possible to search the operation system for backup target data that has never been updated since the backup instruction R1 from the backup server 301 was received. The operation system is a storage area used by the OS of the backup target machine M, for example, the storage area 401 of the storage device D.

  Further, for example, according to the backup target machine M, the repair data can be searched from the storage area 402 of the storage device D by using the data ID included in the acquisition request R3 as a clue. As a result, the repair data can be searched from the data backed up in association with the data ID of the backup data.

  Further, for example, according to the backup target machine M, the repair data can be searched from the storage area 402 of the storage device D by using the related data ID included in the acquisition request R3 as a clue. As a result, when the restoration point created according to the backup instruction R1 is deleted, the repair data is searched from the data backed up in association with the data ID of the other backup data related to the backup data. can do.

  For these reasons, it is possible to restore the backup data in which the data abnormality occurred on the backup server 301 side using the backup data held on the backup target machine M side. As a result, after that, when the backup target data of the storage device D becomes abnormal, the backup target data of the backup target machine M having the abnormal data is used by using the backup data after the backup server 301 is repaired. Can be repaired.

  The backup control method described in the present embodiment can be realized by executing a program prepared in advance on a computer such as a personal computer or a workstation. The backup control program is recorded on a computer-readable recording medium such as a hard disk, a flexible disk, a CD-ROM, an MO, and a DVD, and is executed by being read from the recording medium by the computer. The backup control program may be distributed via a network such as the Internet.

  The following additional notes are disclosed with respect to the embodiment described above.

(Supplementary note 1)
Transmission of backup instruction of backup target data stored in the control target apparatus and transmission of duplicate data of the backup target data to a control target apparatus having backup means for backing up the data in association with identification information of data replication data Sending a request and identification information of the replicated data;
As a result of transmitting the backup instruction, the transmission request, and identification information of the duplicate data, when the duplicate data is received, the duplicate data is stored in the storage unit in association with the identification information of the duplicate data.
A backup control program characterized by causing processing to be executed.

(Appendix 2)
Transmission of backup instruction of backup target data stored in the control target apparatus and transmission of duplicate data of the backup target data to a control target apparatus having backup means for backing up the data in association with identification information of data replication data Send request and
As a result of transmitting the backup instruction and the transmission request, when receiving the duplicate data and the identification information of the duplicate data, store the duplicate data in a storage unit in association with the identification information of the duplicate data;
A backup control program characterized by causing processing to be executed.

(Supplementary note 3)
When detecting abnormality of the duplicate data stored in the storage unit, the identification information of the duplicate data stored in association with the duplicate data is transmitted to the control target device,
The supplementary note 1 or 2 is characterized in that, among the data backed up by the backup means, processing is executed to receive data backed up in association with identification information of the transmitted duplicate data from the control target device. Backup control program.

(Supplementary note 4)
The backup according to appendix 3, wherein when the data backed up in association with the identification information of the duplicated data is received from the control target device, the duplicated data is repaired based on the data. Control program.

(Supplementary note 5)
With reference to related information representing the identification information of the duplicate data and the identification information of other duplicate data related to the duplicate data, the identification information of the other duplicate data related to the duplicate data is identified,
When the abnormality of the duplicate data is detected, the identification information of the identified other duplicate data is transmitted to the control target device, the process is executed,
The receiving process is:
The backup control program according to appendix 3 or 4, wherein data backed up in association with identification information of the other duplicated data among the data backed up by the backup means is received from the control target device.

(Appendix 6)
Transmission of backup instruction of backup target data stored in the control target apparatus and transmission of duplicate data of the backup target data to a control target apparatus having backup means for backing up the data in association with identification information of data replication data Sending a request and identification information of the replicated data;
As a result of transmitting the backup instruction, the transmission request, and identification information of the duplicate data, when the duplicate data is received, the duplicate data is stored in the storage unit in association with the identification information of the duplicate data.
A backup control method characterized by executing processing.

(Appendix 7) The computer
Transmission of backup instruction of backup target data stored in the control target apparatus and transmission of duplicate data of the backup target data to a control target apparatus having backup means for backing up the data in association with identification information of data replication data Send request and
As a result of transmitting the backup instruction and the transmission request, when receiving the duplicate data and the identification information of the duplicate data, store the duplicate data in a storage unit in association with the identification information of the duplicate data;
A backup control method characterized by executing processing.

(Supplementary Note 8) A backup target of backup target data stored in the control target device is provided to a control target device having backup means for backing up the data in association with identification information of data replication data, and the backup target data A transmission unit that transmits a copy data transmission request and identification information of the copy data;
When the copy data is received as a result of the transmission of the backup instruction, the transmission request, and the copy data identification information by the transmission unit, the copy data is stored in the storage unit in association with the copy data identification information. An associating unit for storing;
A backup control device comprising:

(Supplementary note 9) A backup target of backup target data stored in the control target device, a backup target data stored in the control target device in a control target device having backup means for backing up the data in association with identification information of data replication data, and the backup target data A transmission unit for transmitting a transmission request for duplicate data;
As a result of transmitting the backup instruction and the transmission request by the transmitting unit, when the duplicate data and the identification information of the duplicate data are received, the duplicate data is stored in association with the identification information of the duplicate data. An associating unit stored in
A backup control device comprising:

DESCRIPTION OF SYMBOLS 101 Backup control apparatus 102 Control object apparatus 300 Backup system 301 Backup server 1101 Reception part 1102 Generation part 1103,1204 Transmission part 1104,1201 Reception part 1105,1203 Creation part 1106 Association part 1107 Detection part 1108 Restoration part 1202 Duplication part 1205 Search part M Backup target machine

Claims (9)

On the computer,
Transmission of backup instruction of backup target data stored in the control target apparatus and transmission of duplicate data of the backup target data to a control target apparatus having backup means for backing up the data in association with identification information of data replication data Sending a request and identification information of the replicated data;
As a result of transmitting the backup instruction, the transmission request, and identification information of the duplicate data, when the duplicate data is received, the duplicate data is stored in the storage unit in association with the identification information of the duplicate data.
A backup control program characterized by causing processing to be executed. On the computer,
Transmission of backup instruction of backup target data stored in the control target apparatus and transmission of duplicate data of the backup target data to a control target apparatus having backup means for backing up the data in association with identification information of data replication data Send request and
As a result of transmitting the backup instruction and the transmission request, when receiving the duplicate data and the identification information of the duplicate data, store the duplicate data in a storage unit in association with the identification information of the duplicate data;
A backup control program characterized by causing processing to be executed. In the computer,
When detecting abnormality of the duplicate data stored in the storage unit, the identification information of the duplicate data stored in association with the duplicate data is transmitted to the control target device,
3. The process of receiving data backed up in association with identification information of the transmitted duplicate data from the data to be controlled among the data backed up by the backup unit is executed. The backup control program described. In the computer,
4. The process according to claim 3, wherein, when data backed up in association with identification information of the duplicated data is received from the control target device, a process of repairing the duplicated data based on the data is executed. 5. Backup control program. In the computer,
With reference to related information representing the identification information of the duplicate data and the identification information of other duplicate data related to the duplicate data, the identification information of the other duplicate data related to the duplicate data is identified,
When the abnormality of the duplicate data is detected, the identification information of the identified other duplicate data is transmitted to the control target device, the process is executed,
The receiving process is:
5. The backup control program according to claim 3, wherein data backed up in association with identification information of the other replicated data among the data backed up by the backup unit is received from the control target device. 6. . Computer
Transmission of backup instruction of backup target data stored in the control target apparatus and transmission of duplicate data of the backup target data to a control target apparatus having backup means for backing up the data in association with identification information of data replication data Sending a request and identification information of the replicated data;
As a result of transmitting the backup instruction, the transmission request, and identification information of the duplicate data, when the duplicate data is received, the duplicate data is stored in the storage unit in association with the identification information of the duplicate data.
A backup control method characterized by executing processing. Computer
Transmission of backup instruction of backup target data stored in the control target apparatus and transmission of duplicate data of the backup target data to a control target apparatus having backup means for backing up the data in association with identification information of data replication data Send request and
As a result of transmitting the backup instruction and the transmission request, when receiving the duplicate data and the identification information of the duplicate data, store the duplicate data in a storage unit in association with the identification information of the duplicate data;
A backup control method characterized by executing processing. Transmission of backup instruction of backup target data stored in the control target apparatus and transmission of duplicate data of the backup target data to a control target apparatus having backup means for backing up the data in association with identification information of data replication data A transmission unit for transmitting the request and identification information of the duplicated data;
When the copy data is received as a result of the transmission of the backup instruction, the transmission request, and the copy data identification information by the transmission unit, the copy data is stored in the storage unit in association with the copy data identification information. An associating unit for storing;
A backup control device comprising: Transmission of backup instruction of backup target data stored in the control target apparatus and transmission of duplicate data of the backup target data to a control target apparatus having backup means for backing up the data in association with identification information of data replication data A transmitter for transmitting the request;
As a result of transmitting the backup instruction and the transmission request by the transmitting unit, when the duplicate data and the identification information of the duplicate data are received, the duplicate data is stored in association with the identification information of the duplicate data. An associating unit stored in
A backup control device comprising:

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